sketch\morse.cpp: In function 'void morseLetter(char)':

sketch\morse.cpp:69:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]

   for (int i = 0; i < sizeof(morse_table)/ sizeof(struct Morse); i++){

                   ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

sketch\nano_gui.cpp: In function 'bool xpt2046_Init()':

sketch\nano_gui.cpp:153:1: warning: no return statement in function returning non-void [-Wreturn-type]

 }

 ^

sketch\nano_gui.cpp: In function 'void setupTouch()':

sketch\nano_gui.cpp:227:97: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

   displayText("Click on the cross", 20,100, 200, 50, DISPLAY_WHITE, DISPLAY_BLACK, DISPLAY_BLACK);

                                                                                                 ^

sketch\setup.cpp: In function 'void setupFreq()':

sketch\setup.cpp:93:11: warning: variable 'prev_calibration' set but not used [-Wunused-but-set-variable]

   int32_t prev_calibration;

           ^~~~~~~~~~~~~~~~

sketch\setup.cpp: In function 'void setupBFO()':

sketch\setup.cpp:152:17: warning: variable 'prevCarrier' set but not used [-Wunused-but-set-variable]

   unsigned long prevCarrier;

                 ^~~~~~~~~~~

sketch\setup.cpp: In function 'void setupCwDelay()':

sketch\setup.cpp:186:7: warning: variable 'prev_cw_delay' set but not used [-Wunused-but-set-variable]

   int prev_cw_delay;

       ^~~~~~~~~~~~~

sketch\setup.cpp: In function 'void doSetup2()':

sketch\setup.cpp:359:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]

       if (select + i < MENU_TOTAL*COUNTS_PER_ITEM)

           ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

sketch\setup.cpp:343:20: warning: unused variable 'btnState' [-Wunused-variable]

   int select=0, i, btnState;

                    ^~~~~~~~

sketch\ubitx_cat.cpp:21:13: warning: 'useOpenRadioControl' defined but not used [-Wunused-variable]

 static byte useOpenRadioControl = 0;

             ^~~~~~~~~~~~~~~~~~~

sketch\ubitx_ui.cpp: In function 'void displayVFO(int)':

sketch\ubitx_ui.cpp:222:7: warning: unused variable 'x' [-Wunused-variable]

   int x, y;

       ^

sketch\ubitx_ui.cpp:222:10: warning: unused variable 'y' [-Wunused-variable]

   int x, y;

          ^

sketch\ubitx_ui.cpp: In function 'void fastTune()':

sketch\ubitx_ui.cpp:382:163: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

   displayText("Fast tune", LAYOUT_MODE_TEXT_X, LAYOUT_MODE_TEXT_Y, LAYOUT_MODE_TEXT_WIDTH, LAYOUT_MODE_TEXT_HEIGHT, COLOR_TEXT, COLOR_BACKGROUND, COLOR_BACKGROUND);

                                                                                                                                                                   ^

sketch\ubitx_ui.cpp: In function 'void enterFreq()':

sketch\ubitx_ui.cpp:413:7: warning: variable 'f' set but not used [-Wunused-but-set-variable]

   int f;

       ^

sketch\ubitx_ui.cpp: In function 'void drawTx()':

sketch\ubitx_ui.cpp:525:144: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

     displayText("TX", LAYOUT_TX_X, LAYOUT_TX_Y, LAYOUT_TX_WIDTH, LAYOUT_TX_HEIGHT, COLOR_ACTIVE_TEXT, COLOR_ACTIVE_BACKGROUND, COLOR_BACKGROUND);

                                                                                                                                                ^

sketch\ubitx_ui.cpp: In function 'int enc_read()':

sketch\ubitx_ui.cpp:600:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]

   while (millis() < stop_by) { // check if the previous state was stable

          ~~~~~~~~~^~~~~~~~~

sketch\ubitx_ui.cpp: In function 'void vfoReset()':

sketch\ubitx_ui.cpp:664:17: warning: suggest parentheses around assignment used as truth value [-Wparentheses]

   if (vfoActive = VFO_A)

sketch\ubitx_ui.cpp: In function 'int setCwSpeed()':

sketch\ubitx_ui.cpp:754:57: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

     wpm = getValueByKnob(1, 100, 1,  wpm, "CW: ", " WPM");

                                                         ^

sketch\ubitx_ui.cpp:754:57: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

sketch\ubitx_ui.cpp:749:9: warning: unused variable 'knob' [-Wunused-variable]

     int knob = 0;

         ^~~~

sketch\ubitx_ui.cpp:763:1: warning: no return statement in function returning non-void [-Wreturn-type]

 }

 ^

sketch\ubitx_ui.cpp: In function 'void setCwTone()':

sketch\ubitx_ui.cpp:767:7: warning: unused variable 'prev_sideTone' [-Wunused-variable]

   int prev_sideTone;

       ^~~~~~~~~~~~~

C:\Program Files (x86)\Arduino\sketch\ubitxv6-pdq_gfx_update\ubitx_v6.3.1_code\ubitx_v6.3.1_code.ino: In function 'void setFrequency(long unsigned int)':

C:\Program Files (x86)\Arduino\sketch\ubitxv6-pdq_gfx_update\ubitx_v6.3.1_code\ubitx_v6.3.1_code.ino:279:12: warning: unused variable 'osc_f' [-Wunused-variable]

   uint64_t osc_f, firstOscillator, secondOscillator;

            ^~~~~

C:\Program Files (x86)\Arduino\sketch\ubitxv6-pdq_gfx_update\ubitx_v6.3.1_code\ubitx_v6.3.1_code.ino:279:19: warning: unused variable 'firstOscillator' [-Wunused-variable]

   uint64_t osc_f, firstOscillator, secondOscillator;

                   ^~~~~~~~~~~~~~~

C:\Program Files (x86)\Arduino\sketch\ubitxv6-pdq_gfx_update\ubitx_v6.3.1_code\ubitx_v6.3.1_code.ino:279:36: warning: unused variable 'secondOscillator' [-Wunused-variable]

   uint64_t osc_f, firstOscillator, secondOscillator;

                                    ^~~~~~~~~~~~~~~~

C:\Program Files (x86)\Arduino\sketch\ubitxv6-pdq_gfx_update\ubitx_v6.3.1_code\ubitx_v6.3.1_code.ino: In function 'void startTx(byte)':

C:\Program Files (x86)\Arduino\sketch\ubitxv6-pdq_gfx_update\ubitx_v6.3.1_code\ubitx_v6.3.1_code.ino:320:17: warning: unused variable 'tx_freq' [-Wunused-variable]

   unsigned long tx_freq = 0;

                 ^~~~~~~

C:\Program Files (x86)\Arduino\sketch\ubitxv6-pdq_gfx_update\ubitx_v6.3.1_code\ubitx_v6.3.1_code.ino: In function 'void checkButton()':

C:\Program Files (x86)\Arduino\sketch\ubitxv6-pdq_gfx_update\ubitx_v6.3.1_code\ubitx_v6.3.1_code.ino:443:7: warning: unused variable 'i' [-Wunused-variable]

   int i, t1, t2, knob, new_knob;

       ^

C:\Program Files (x86)\Arduino\sketch\ubitxv6-pdq_gfx_update\ubitx_v6.3.1_code\ubitx_v6.3.1_code.ino:443:10: warning: unused variable 't1' [-Wunused-variable]

   int i, t1, t2, knob, new_knob;

          ^~

C:\Program Files (x86)\Arduino\sketch\ubitxv6-pdq_gfx_update\ubitx_v6.3.1_code\ubitx_v6.3.1_code.ino:443:14: warning: unused variable 't2' [-Wunused-variable]

   int i, t1, t2, knob, new_knob;

              ^~

C:\Program Files (x86)\Arduino\sketch\ubitxv6-pdq_gfx_update\ubitx_v6.3.1_code\ubitx_v6.3.1_code.ino:443:18: warning: unused variable 'knob' [-Wunused-variable]

   int i, t1, t2, knob, new_knob;

                  ^~~~

C:\Program Files (x86)\Arduino\sketch\ubitxv6-pdq_gfx_update\ubitx_v6.3.1_code\ubitx_v6.3.1_code.ino:443:24: warning: unused variable 'new_knob' [-Wunused-variable]

   int i, t1, t2, knob, new_knob;

                        ^~~~~~~~

C:\Program Files (x86)\Arduino\sketch\ubitxv6-pdq_gfx_update\ubitx_v6.3.1_code\ubitx_v6.3.1_code.ino: In function 'void doRIT()':

C:\Program Files (x86)\Arduino\sketch\ubitxv6-pdq_gfx_update\ubitx_v6.3.1_code\ubitx_v6.3.1_code.ino:566:17: warning: unused variable 'newFreq' [-Wunused-variable]

   unsigned long newFreq;

                 ^~~~~~~

sketch\ubitx_si5351.cpp: In function 'void si5351bx_init()':

sketch\ubitx_si5351.cpp:69:11: warning: unused variable 'reg' [-Wunused-variable]

   uint8_t reg;  uint32_t msxp1;

           ^~~

Sketch uses 27740 bytes (90%) of program storage space. Maximum is 30720 bytes.
Global variables use 700 bytes (34%) of dynamic memory, leaving 1348 bytes for local variables. Maximum is 2048 bytes.